Asus zenfone 4selfie duel camera ZD553KL is not user friendly phone. ti`s price is high but specification so much better. asuse sound reception is better from local phone.its network technology are GSM/HSPA/LTE. it`s battery only Li-lon 3000mAh and non removable so charging backup is not long. it`s dimensions 155.7 x 75.9 x 7, 9 mm and it`a weight 144g that is much weight for a smart phone. it`s display is IPS LCD capacitive touchscreen and 16 colors and display size 5.5 inches and resolution only 720 x 1280 pixels, 16;9 ratio . its ram 4gb and rom 64 gb that is enough for a smart phone but that ram and rom are not perfectly work when it`s age will be 4/5 monthes. it`s camera primary is 16 MP LED flash and Geo-tagging, face detection. it`s secondary camera Dual: 20 MP+ 8MP, LED flash but that are not good at work.